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If you have more than one item, say Greaves (25%) and Malady (50%) you calculate 1.013*(1+0.25+0.5).

As for Trist's attack speed, quoting from my comment in another thread.

Quote:

Basilisk9466:

I'm a little uncertain about how to build Tristana these days, actually, as the new patch is making me wonder whether it's a multiplicative bonus or an additive one. It makes a pretty big difference.

If it's multiplicative, it's insane. 2.5/1.9 = 1.316, 1.316/1.013 = 1.299. Translated, if you have items and runes which add up to over a 30% AS bonus, you're wasting it.

If it's additive, 2.5/1.013 = 2.468, 2.468-0.9 = 1.568. Translated, you max out with runes/items adding up to around 55%.

Either way, I waste a huge amount of damage on my current Trist build, so definite reworking needed...

Just to break down the maths there a little. In the multiplicative case, it means that you current attack speed (including items) is increased by 90%. To work out the maximum, we take the hardcap of 2.5, and divide by that 90% increase. We then divide that number by the base attack speed to work out the maximum items you can have.

If it's additive, the Rapid Fire bonus acts like another AS item, so we divide the hardcap by the base, then subtract 0.9 from the result.

assuming the numbers at the kol wiki (http://leagueoflegends.wikia.com/wiki/Tristana_The_Megling_Gunner)are still accurate, Tristana has a base attack speed of .65. since attack speed caps at 2.5, she will hit maximum attack speed at +284.6%. her attack speed increases by 3.1% every time she levels up. since she will theoretically level up 17 times, she has an inherent +52.7% attack speed. at level five, Rapid fire adds an additional 90% to her attack speed.

therefore, you do not want your items, runes and masteries to give you bonus attackspeed exceeding +141.9%.

141.92% attack speed between items and runes (purely for demonstrative purposes, please never stack Maladies). You're just under the hardcap, not at it, so your calculation doesn't work for getting there. And it certainly doesn't allow for Rapid Fire.

Trust me. My numbers work. I've tested them ingame and on paper. 56% is your maximum if you want the most out of Rapid Fire.

Edit: Compared the Leaguecraft figures with the Wiki ones - they give a slightly different base attack speed, which would account for the discrepancy. Still, you didn't account for Rapid Fire.

assuming the numbers at the kol wiki (http://leagueoflegends.wikia.com/wiki/Tristana_The_Megling_Gunner)are still acurate, Tristana has a base attack speed of .65. since attack speed caps at 2.5, she will hit maximum attack speed at +284.6%. her attack speed increases by 3.1% every time she levels up. since she will theoretically level up 17 times, she has an inherent +52.7% attack speed. at level five, Rapid fire adds an additional 90% to her attack speed.

therefore, you do not want your items, runes and masteries to give you bonus attackspeed exceeding +141.9%.

Seems correct.

I have 11% from Runes
I usually grab BloodRazor, Beserker Grieves and Wits end and hit just under 2.4 atk/sec with my rapid fire

Trust me. My numbers work. I've tested them ingame and on paper. 56% is your maximum if you want the most out of Rapid Fire.

This is correct. The easiest way to see an example of this is by going to to the leaguecraft builder and equipping Tristana with Sword of the Divine and two phantom dancers. The two phantom dancers have a combines IAS of 90% (simulating a triggered rapid fire). The Sword of the Divine has an IAS of 55%. With just these three items Tristana is hitting 2.482 attacks per second.

The only reason to exceed 56% IAS through items/runes/masteries is if you only plan on taking say 3 ranks of rapid fire early and want to hit the cap with Rank 3. In that case you would want your IAS from items/runes/masteries to be 86%

Level 18 Tristana (0.992 attack speed. Got the odd attack speed rune due to messing with the combiner :P ) with Greaves and SotD. +55% and +25% attack speed. At 18 my attack speed is 1.517 (including items) boosting to 2.108 with Rapid Fire. I build another Recurve, and it puts me to 1.780, which is 2.370 with Rapid Fire. Another dagger puts me to 1.870 or 2.468 with Rapid Fire. A final dagger puts me to 1.976, and I hit the cap with Rapid Fire.

Now, that is
+55%, +25%, +40%, +15%, +15%, and I still need rapid fire to hit it.

These numbers are all taken from the game. So, am I missing a step in my mathematics?

Quoting myself. You need ~+150% from items to hit the cap with Rapid Fire.

Just looked over Timmy's maths, and it looks right to me.

Quote:

Timmy the Spork:

here's the maths.

assuming the numbers at the kol wiki (http://leagueoflegends.wikia.com/wiki/Tristana_The_Megling_Gunner)are still acurate, Tristana has a base attack speed of .65. since attack speed caps at 2.5, she will hit maximum attack speed at +284.6%. her attack speed increases by 3.1% every time she levels up. since she will theoretically level up 17 times, she has an inherent +52.7% attack speed. at level five, Rapid fire adds an additional 90% to her attack speed.

therefore, you do not want your items, runes and masteries to give you bonus attackspeed exceeding +141.9%.